1. Cell Cycle and Nuclear Divsion
Mitosis

2. Structures and Sequences
During Mitosis a number of changes take place
These changes follow a logical sequence of events that allow the division of DNA into two equal, genetically identical portions
There are a number of cell structures that bear watching

3. Important structural components
The DNA must replicate itself
The chromosomes must condense and re-extend
The nuclear envelope must disintegrate and reform
The centriole must divide and migrate (in animal cells, plants lack centrioles)
The spindle must form and disintegrate
The cytoplasm must divide

4. Chromosomes must: Replicate Condense Attach to the spindle
S phase of interphase
Condense
Prophase
Attach to the spindle
Prometaphase
Align in the middle of the spindle
Metaphase
Divide and migrate to opposite poles
Anaphase
Extend
Telophase

5. Duration and Frequency

6. Duration and Frequency
Phases that appear frequently must take up a relatively large part of the time in the cell cycle
Phases that are relatively short won’t appear as often

7. Duration and Frequency
Most of the cells in this view are similar to the cells outlined. This phase must be the longest phase

8. Duration and Frequency
Very few of the cells in this view look like the highlighted cell. That phase must be relatively short

9. Compare the appearance of the cells that you see in this view.
Consider which of them look alike
What about them is similar?
What about them is different?
Which type appears most frequently?

10. Interphase

11. Interphase Consider the condition of the: Chromatin / Chromosomes
Nucleolus
Nuclear envelope
Mitotic Spindle

12. Prophase Consider the condition of the: Chromatin / Chromosomes
Nucleolus
Nuclear envelope
Mitotic Spindle

13. Metaphase Consider the condition of the: Chromatin / Chromosomes
Nucleolus
Nuclear envelope
Mitotic Spindle

14. Anaphase Consider the condition of the: Chromatin / Chromosomes
Nucleolus
Nuclear envelope
Mitotic Spindle

15. Telophase Consider the condition of the: Chromatin / Chromosomes
Nucleolus
Nuclear envelope
Mitotic Spindle
Note what is happening to the cytoplasm
How is it different in the two cells shown?

16. Mitosis and Cell Division Video

17. Cell Cycle and Mitosis Tutorial
From Bozeman Biology
Cell Cycle
Phases of Mitosis
Khan Academy